ludlcw



(ModeL) 0. A. UDLOW.

LOCK.

Patented Aug. 14, 1883.

filll zZ'iaes-ses: @0552?) CHARLES A. UDLow, on nnmenronr, CONNECTICUT, ASSIGNOR HALF TQ WALTER LIPE, on NEW YORK, N. Y.

PATENT OFFI E.

OF' ONE- LOCK.

To aZZ whom, it may concern Be it known that I, CHARLES A. LUDLow, of Bridgeport, in the county of Fairfield and a State of Connecticut, have invented a new and useful Improvement in Locks, of which the following is a specification;

My invention relates to looks the frames or cases of which are of such form that they may be readily inserted into holesformedby ordi- .nary angers or boring-bits; andthe principal object of my invention is to provide a lock which can be made and sold at a very low price.

The inventionis applicable to locks wherein bolts having a sliding movement only are employed, and which are used for drawers, doors,

, and other like purposes, and also to looks where hooked bolts are employed, andwhich are used for piano-cases, the covers of sewing-machines, and other like purposes.

The invention consists in the combination, with the bolt or bolts and tumbler of alock,of a skeleton case or frame composed of circular end portions or disks slotted for the passage of the bolt or bolts, and side pieces or portions connecting said end portions or disks and forming bearings for the journals of the tumbler, the lock being capable of being inserted into a hole formed by an ordinary auger or boring-bit In the accompanying drawings, Figuresl and 2 are sectional views in planes at right an-' gles to each other o'f a lock having a singlesliding bolt and embodying my invention. Fig. 3 is a plan or end view thereof. Figs. 4 and 5 are sectional views in planes at right angles to each other of a lock having a hooked 'b'olt and embodying my invention, the bolt being shown as locked. Fig."6 is a view similar to Fig. 4, the bolt being unlocked; and Fig, 7 is a plan of the blank from which the whole frame is formed.

Similar letters of reference designate corresponding parts in all the figures.

The frame of the lock is composed of four portions, plates, or disksnamely, two end portions or plates and two side portions or plates. A A designate the end portions, plates, or disks of the frame, which are round, andB B designate the sideportions thereof.

The portions A and B of the frame are, as here shown, all formed integral from [sheet or August 14, 1883.

together, or they may be connected by a rivet.

. This construction of frame is very simple; but,

if desired, the portions A B may consist of separate plates, riveted or otherwise secured together. i The lock can be inserted into a round hole bored with an ordinary anger or boring-bit. The end portions, A, have in them slots a, in which the bolt 0 moves, and the said bolt is formed with a yoke, 0, between the end portions, A.

Referring now to Figs. 1, 2, and 3, D desig nates the tumbler, which is j ournaled in the side portion, B, and in one end of which there is formed a socket, b, for theinsertion of a squareended or a flat key; or the tumbler may be otherwise formed to receive a key of any form. The tumbler D works or turns in the yoke O, and byits action moves the bolt 0. I

E designates a spring which is. arranged on the bolt between the yoke G and one of the'end portions, A, and this spring serves to impel the bolt outward or upward into a locking position. When the bolt is to be locked, the tumbler is turned into the position shown, and. the spring impels the bolt into its keeper. (Not here shown.) The bolt is withdrawn by turning the tumbler half round, so that it will move the yoke and bolt inward against the action of the spring.

Ifdesired, the spring might be employed to imp'el the bolt inward, or to unlockit when the tumbler is turned to permit of it or, if desired, the spring might be dispensed with entirely. The arrangement. of the bolt 0, yoke O, tumbler D, and spring E in Figs. 4, 5, and 6 is the same as above described with reference to Figs. 1,2, and 3. In connection with the bolt 0, however, I employ a hooked bolt, F, provided with a yoke, F, which is connected with the bolt 0, so as to move longitudinally with it, but which may move'laterally relatively to said boltO. The yokes O"a1 1d F as here shown are each provided with a pin, 0,

working in a slot, 0, in the other, and hence IOQ the yoke F may be moved in the direction of the length of said slots. When the tumbler D a is turned to the position shown in Fig. 6, the two bolts F are drawn in-against the action of the spring E; but when the tumbler is turned toward the position shown in Fig. 4 the two bolts are first moved through the keeper G, and the tumbler then strikes against an ear or lug, d, on the yoke F and moves said yoke and the hooked bolt F laterally, so that the bolt will catch on the keeper G and hold it, as shown in Fig. 4. When the tumbler is turned to unlock the bolts, it first acts on the righthand side of the yoke F, and moves it laterally, so as to free the hooked bolt F from the keeper G, and then acts on the lower portions of the yokes to draw down the bolts. This form of lock is adapted for locking piano-cases and sewing-machine covers, and for other purposes.

The several parts of my lock can be very cheaply produced either by stamping or punching them out of sheet metal or by casting them, and the lockscan be made and sold at a very low price.

I am aware that locks havebeen made of such form that they may be inserted into holes bored with ordinary augers or boring-bits, and hence I'do not claim such a lock, broadly, as of my 30 invention. The cases or frames of such locks have, however, been formed of pieces of tubing,

closed at the ends by heads, and are objectiohable because of the cost of so making the cases or frames, and because no part of the lock mechanism is accessible, nor can it be even seen or examined without opening the tubular case and withdrawing the mechanism therefrom. By making the frame of two end portions, disks, or circular plates and two side plates or portions I form a skeleton frame, which can be very cheaply produced, and which enables all the mechanism of the lock to be seen without withdrawing it from the frame. The end portions or disks fit snugly in a hole boredwith an ordinary anger or boring-bit and prop- 4 5 erly hold the lock against movement sidewise. What I claim as my invention, and desire to secure by Letters Patent, is

The combination, with the bolt or bolts and tumbler of a lock, of a skeleton case or frame composed of circular end portions or disks slotted for the passage of the bolt or bolts, and side portions or plates connecting said end. portions or disks and forming bearings for the journals of the tumbler, the lock being capable of being inserted into ahole formed by an ordinary auger or boringbit, substantially as described. CHAS. A. LUDLOW. Witnesses:

FREDK. HAYNES, En. L. l\IORAN. 

